如何顯示空值到UITableView？如果在iPhone SDK的web服務響應沒有找到標籤

Question

- (void)parser:(NSXMLParser *)parser didStartElement:(NSString *)elementName namespaceURI:(NSString *)namespaceURI qualifiedName:(NSString *)qualifiedName attributes:(NSDictionary *)attributeDict 
{ 
    if([elementName isEqualToString:@"PublicBusinessName"]) 
    { 
    boolListofareasdata=YES; 
    } 
    else if([elementName isEqualToString:@"ProfessionName"]) 
    { 
     boolListofareasdata1=YES; 
    } 
    else if([elementName isEqualToString:@"PublicContactEmail"]) 
    { 
     boolListofareasdata2=YES; 
    } 
    else if([elementName isEqualToString:@"PublicBusinessURL"]) 
    { 
     boolListofareasdata3=YES; 
    } 
    else if([elementName isEqualToString:@"BrandLogoName"]) 
    { 
     boolListofareasdata4=YES; 
    } 
} 


- (void)parser:(NSXMLParser *)parser foundCharacters:(NSString *)string 
{ 
    if (boolListofareasdata) 
    { 
     [arrareasdata addObject:string]; 

     NSLog(@"NAME...............%@",arrareasdata); 
    } 
    else if (boolListofareasdata1) 
    { 
     [arrareasdata1 addObject:string]; 

     NSLog(@"DESIGN..............%@",arrareasdata1); 
    } 
    else if (boolListofareasdata2) 
    { 
     [arrareasdata2 addObject:string]; 

     NSLog(@"DESIGN..............%@",arrareasdata1); 
    } 
    else if (boolListofareasdata3) 
    { 
     [arrareasdata3 addObject:string]; 

     NSLog(@"WEB....................%@",arrareasdata3); 
    } 
    else if (boolListofareasdata4) 
    { 
     [arrareasdata4 addObject:str]; 

     NSLog(@"WEB....................%@",arrareasdata4); 
    } 
} 

-(void)parser:(NSXMLParser *)parser didEndElement:(NSString *)elementName namespaceURI: (NSString *)namespaceURI qualifiedName:(NSString *)qName 
{ 
    if ([elementName isEqualToString:@"PublicBusinessName"]) 
    { 
     boolListofareasdata=NO; 
    } 
    else if ([elementName isEqualToString:@"ProfessionName"]) 
    { 
     boolListofareasdata1=NO; 
    } 
    else if([elementName isEqualToString:@"PublicContactEmail"]) 
    { 
     boolListofareasdata2=NO; 
    } 
    else if ([elementName isEqualToString:@"PublicBusinessURL"]) 
    { 
     boolListofareasdata3=NO; 
    } 
    else if ([elementName isEqualToString:@"BrandLogoName"]) 
    { 
     boolListofareasdata4=NO; 
    } 
} 

- (void)parserDidEndDocument:(NSXMLParser *)parser{ 
    [tableView reloadData]; 
} 

- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView 
{ 
    return 1; 
} 

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section 
{ 
    return [arrareasdata3 count]; 
} 

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath 
{ 

    static NSString *CellIdentifier = @"CustomCell"; 

    CustomCell *cell = (CustomCell *) [tableView dequeueReusableCellWithIdentifier:CellIdentifier]; 
    if (cell == nil) {   
     NSArray *topLevelObjects = [[NSBundle mainBundle] loadNibNamed:@"CustomCell" owner:self options:nil]; 

     for (id currentObject in topLevelObjects) 
     { 
      if ([currentObject isKindOfClass:[UITableViewCell class]]) 
      { 
       cell = (CustomCell *) currentObject; 
       break; 
      } 
     } 
    } 

    NSLog(@"TABLE VIEW CONTROLLER........................"); 
    cell.nameLabel.text = [arrareasdata objectAtIndex:indexPath.row]; 
    cell.designLabel.text = [arrareasdata1 objectAtIndex:indexPath.row]; 
    cell.emailLabel.text = [arrareasdata2 objectAtIndex:indexPath.row]; 
    cell.webLabel.text = [arrareasdata3 objectAtIndex:indexPath.row]; 

    return cell; 
} 

Answer 1

在UITableViewCell中添加空值是這樣的：

NSString *strName = [arrareasdata objectAtIndex:indexPath.row]; 
if((strName.length > 0) 
{ 
    cell.nameLabel.text = strName; 
} 
else 
{ 
    cell.nameLabel.text = @""; 
} 
//same logic for designLabel,emailLabel,webLabel in which u will fill your data